JPH0356867Y2 - - Google Patents
Info
- Publication number
- JPH0356867Y2 JPH0356867Y2 JP3921587U JP3921587U JPH0356867Y2 JP H0356867 Y2 JPH0356867 Y2 JP H0356867Y2 JP 3921587 U JP3921587 U JP 3921587U JP 3921587 U JP3921587 U JP 3921587U JP H0356867 Y2 JPH0356867 Y2 JP H0356867Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- pressure
- refrigerant
- expansion valve
- pressure chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003463 adsorbent Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000011261 inert gas Substances 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 description 18
- 239000007788 liquid Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- OKTJSMMVPCPJKN-BJUDXGSMSA-N carbon-11 Chemical class [11C] OKTJSMMVPCPJKN-BJUDXGSMSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Temperature-Responsive Valves (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、空気調和装置等において適正過熱度
で弁開度を調整するための温度式膨張弁に関す
る。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a temperature-type expansion valve for adjusting the valve opening at an appropriate degree of superheat in an air conditioner or the like.
従来の技術
蒸発器、圧縮機、凝縮器及び感温膨張弁をそれ
ぞれ直列に連結したサイクルからなる冷凍装置に
おいて、温度式膨張弁は蒸発器内の液冷媒の蒸発
の割合によつて変化する蒸発器出口側の冷媒ガス
の過熱度を感温筒で検出することによつて、膨張
弁の圧力室にガス圧力として伝送し、蒸発器内に
流入させる液冷媒の割合を精密に制御調節する機
器であるが、負荷条件や外気条件が大幅に変動す
る条件で冷媒装置が運転される場合には膨張弁の
制御を精密に調節することは一般に困難である。Prior Art In a refrigeration system consisting of a cycle in which an evaporator, a compressor, a condenser, and a temperature-sensitive expansion valve are connected in series, the temperature-type expansion valve has an evaporation rate that changes depending on the evaporation rate of liquid refrigerant in the evaporator. A device that precisely controls and adjusts the proportion of liquid refrigerant flowing into the evaporator by detecting the degree of superheat of the refrigerant gas on the outlet side of the evaporator using a thermosensor tube and transmitting the gas pressure to the pressure chamber of the expansion valve. However, it is generally difficult to precisely adjust the control of the expansion valve when the refrigerant system is operated under conditions where load conditions and outside air conditions vary significantly.
即ち、例えば負荷が大幅に急増した場合には、
蒸発器内の冷媒の蒸発が過多となつて蒸発器出口
側の冷媒過熱度の上昇を来たし、膨張弁の弁開度
を大幅に増加させる必要が生ずるために、蒸発器
の蒸発有効面積の大幅な減少を来たし、負荷の増
大に応じて蒸発器の蒸発能力を増加させる必要性
と相矛盾した結果を生ぜしめる。又、逆に負荷が
大幅に減少した場合には蒸発器内における冷媒の
蒸発が不十分となる液状の冷媒を混入した状態で
圧縮機に送られ、その結果液圧縮による圧縮機の
効率低下のみならず、強いては圧縮機の破損を来
す場合がある。 That is, for example, if the load increases rapidly,
Excessive evaporation of the refrigerant in the evaporator causes an increase in the degree of superheating of the refrigerant at the evaporator outlet side, making it necessary to significantly increase the opening degree of the expansion valve. This results in a significant decrease, contradicting the need to increase the evaporation capacity of the evaporator as the load increases. Conversely, if the load decreases significantly, the refrigerant in the evaporator will be mixed with liquid refrigerant, which will not evaporate sufficiently, and as a result, the efficiency of the compressor will only decrease due to liquid compression. Otherwise, the compressor may be damaged.
従つて、かかる上記の問題点を解消するために
は、蒸発器出口側における冷媒過熱度の変動幅を
極力減少させて常に適正な設定過熱度（例えば＋
５℃）に保持して運転することが望ましいが、従
来の膨張弁では一台で冷媒過熱度の変動巾の全域
にわたつて制御することは困難であるため、特開
昭53−100481号公報記載のように主感温筒に熱量
を調節し得る電熱ヒーターを装着した補助感温筒
を接続し、膨張弁の静止過熱度を標準値よりも高
く設定してこれを補助感温筒により補正するよう
にして冷媒ガスの過熱度が適正になる如く膨張弁
のばね圧を調整する等の試みも行なわれている。 Therefore, in order to solve the above-mentioned problems, it is necessary to reduce the fluctuation range of the degree of superheating of the refrigerant at the evaporator outlet side as much as possible so as to always maintain an appropriate set degree of superheating (for example, +
It is desirable to operate the refrigerant at a temperature of 5℃), but it is difficult to control the refrigerant superheat degree over the entire range of variation with a single conventional expansion valve. As described above, connect an auxiliary thermosensor equipped with an electric heater that can adjust the amount of heat to the main thermosensor, set the static superheat of the expansion valve higher than the standard value, and correct this with the auxiliary thermosensor. Attempts have also been made to adjust the spring pressure of the expansion valve so that the degree of superheating of the refrigerant gas becomes appropriate.
考案が解決しようとする問題点
ところで、上記従来技術にあつては、主感温筒
と補助感温筒がダイヤフラム等の圧力応動部材に
対してキヤピラリー管により直列に接続されてい
るので、補助感温筒の設置が主感温筒の設置位置
近辺に拘束される傾向にあると共にその設置位置
に苦慮する等の欠点があつた。Problems to be Solved by the Invention By the way, in the above-mentioned conventional technology, the main temperature-sensing tube and the auxiliary temperature-sensing tube are connected in series to a pressure-responsive member such as a diaphragm by a capillary tube, so the auxiliary temperature-sensing tube is There were drawbacks such as the tendency for the installation of the hot cylinder to be restricted near the installation position of the main temperature sensing cylinder, and the difficulty in determining the installation position.
本考案は上記した点に着目してなされたもので
あり、キャピラリー管にて接続した補助感温筒を
設けることなくして従来と同様な補助機能を達成
し得るようにしたものである。 The present invention has been developed with the above-mentioned points in mind, and it is possible to achieve the same auxiliary function as the conventional one without providing an auxiliary temperature-sensitive cylinder connected by a capillary tube.
問題点を解決するための手段
上記の目的を達成するため、本考案において
は、不活性ガスと該ガスの吸着剤を封入してなる
感温筒をキヤピラリー管で膨張弁の圧力応動部材
に対する圧力室に接続し、該圧力室に該不活性ガ
スとガスの吸着剤を封入し、該圧力室に対する加
熱度可変ヒーターを設ける構成を採用した。Means for Solving the Problems In order to achieve the above object, in the present invention, a temperature sensitive cylinder containing an inert gas and an adsorbent for the gas is connected to a capillary tube to apply pressure to a pressure responsive member of an expansion valve. A configuration was adopted in which the inert gas and gas adsorbent were sealed in the pressure chamber, and a variable heating degree heater was provided for the pressure chamber.
実施例
弁本体１の下端部に凝縮器（図示せず）から送
られる高温高圧の冷媒液流入管Ｂから流入する冷
媒液量の調節用弁体３がばね４と一体に設けら
れ、該弁体３は圧力応動部材としてのダイヤフラ
ム６の下面に当金５を介して固定された弁棒７の
下端部に一体に形成されている。Ａは、弁体３の
開閉に応じて膨張室２に流入して断熱膨張により
低温低圧化した冷媒液の流出管で、この流出管Ａ
は蒸発器（図示せず）に連設している。８は蒸発
器出口側の冷媒と連通する外部均圧管で、ダイヤ
フラム６で区画される一方の均圧室R1に弁本体
１内の通路を介して連通し、該均圧室R1内の圧
力はばね４の圧力とともにダイヤフラム６の下面
に作用する。Embodiment A valve element 3 for adjusting the amount of refrigerant liquid flowing in from a high-temperature, high-pressure refrigerant liquid inflow pipe B sent from a condenser (not shown) is provided at the lower end of the valve body 1, integrally with a spring 4. The body 3 is integrally formed at the lower end of a valve rod 7 which is fixed via a stopper 5 to the lower surface of a diaphragm 6 as a pressure responsive member. A is an outflow pipe for the refrigerant liquid that flows into the expansion chamber 2 in response to the opening and closing of the valve body 3 and is lowered in temperature and pressure by adiabatic expansion.
is connected to an evaporator (not shown). Reference numeral 8 denotes an external pressure equalizing pipe that communicates with the refrigerant on the evaporator outlet side, and communicates with one pressure equalizing chamber R 1 partitioned by the diaphragm 6 via a passage in the valve body 1, so that the inside of the pressure equalizing chamber R 1 is The pressure acts together with the pressure of the spring 4 on the underside of the diaphragm 6.
ダイヤフラム６の周縁部は上蓋９と下蓋１０に
より溶接して支持されており、該上蓋９にはダイ
ヤフラム６上面の圧力室R2に連通するキヤピラ
リー管Ｐが接続されている。キヤピラリー管Ｐの
端部には、不活性ガスと加熱又は冷却により該不
活性ガスを容易に離脱又は吸着しうる吸着剤とし
ての活性炭１１を封入した感温筒Ｔが接続され
る。 The peripheral edge of the diaphragm 6 is welded and supported by an upper cover 9 and a lower cover 10, and a capillary pipe P communicating with the pressure chamber R2 on the upper surface of the diaphragm 6 is connected to the upper cover 9. Connected to the end of the capillary tube P is a temperature-sensitive cylinder T filled with an inert gas and activated carbon 11 as an adsorbent that can easily remove or adsorb the inert gas by heating or cooling.
上蓋９の上方には筒部９ａが連設され、該筒部
９ａ内、即ち圧力室R2において吸着剤としての
活性炭１１が連通孔１２ａを有する支持板１２上
において充填されている。圧力室R2からキヤピ
ラリー管Ｐにかけては不活性ガスが封入される。 A cylindrical portion 9a is connected above the upper lid 9, and activated carbon 11 as an adsorbent is filled in the cylindrical portion 9a, that is, in the pressure chamber R2 , on a support plate 12 having a communication hole 12a. An inert gas is filled from the pressure chamber R2 to the capillary pipe P.
上蓋９の頂部９ｂには加熱度可変ヒーター１３
が設けられ、従つて上蓋９の筒部９ａは補助感温
部T′を構成する。 A variable heating degree heater 13 is installed at the top 9b of the upper lid 9.
Therefore, the cylindrical portion 9a of the upper lid 9 constitutes an auxiliary temperature sensing portion T'.
使用時においては、感温筒Ｔは蒸発器出口側の
冷媒配管に添着して冷媒温度を検出させるにし、
補助感温部の加熱度可変ヒーターにより最適過熱
度を調整する。温度制御の手段としてヒーターを
例示したが、定温度発熱体、過熱冷却素子等を使
用することができる。 When in use, the temperature sensing tube T is attached to the refrigerant pipe on the evaporator outlet side to detect the refrigerant temperature,
The optimum degree of superheating is adjusted by the variable heating degree heater in the auxiliary temperature sensing section. Although a heater is exemplified as a temperature control means, a constant temperature heating element, a superheating cooling element, etc. can also be used.
考案の効果
本考案は上記した如くに、不活性ガスと該ガス
の吸着剤を封入してなる感温筒をキヤピラリー管
で膨張弁の圧力応動部材に対する圧力室に接続
し、該圧力室に該不活性ガスとガスの吸着剤を封
入し、該圧力室に対する加熱度可変ヒーターを設
けて成るものであるから、最適過熱度を調整する
ための加熱度可変ヒーター付の補助感温部を膨張
弁本体に設けることが可能となり、機構を簡略化
し得ると共に全体の設置が容易となる特長を有す
る。Effects of the invention As described above, the present invention connects a temperature-sensitive cylinder, which is made of an inert gas and an adsorbent for the gas, through a capillary tube to a pressure chamber for a pressure-responsive member of an expansion valve. The pressure chamber is filled with an inert gas and a gas adsorbent, and is equipped with a variable heating heater for the pressure chamber, so an auxiliary temperature sensing section with a variable heating heater to adjust the optimum degree of superheating is connected to the expansion valve. It can be installed in the main body, which has the advantage of simplifying the mechanism and facilitating the overall installation.
図は本考案の一実施例についての断面図であ
る。
Ｔ……感温筒、T′……補助感温部、Ｐ……キ
ヤピラリー管、R2……圧力室、６……圧力応動
部材（ダイヤフラム）、１１……吸着剤、１３…
…加熱度可変ヒーター。
The figure is a sectional view of one embodiment of the present invention. T...Temperature sensing cylinder, T'...Auxiliary temperature sensing section, P...Capillary tube, R2 ...Pressure chamber, 6...Pressure responsive member (diaphragm), 11...Adsorbent, 13...
...Variable heating degree heater.
Claims (1)
温筒をキヤピラリー管で膨張弁の圧力応動部材に
対する圧力室に接続し、該圧力室に該不活性ガス
とガスの吸着剤を封入し、該圧力室に対する加熱
度可変ヒーターを設けて成ることを特徴とする温
度式膨張弁。 A temperature-sensitive cylinder filled with an inert gas and an adsorbent for the gas is connected to a pressure chamber for the pressure-responsive member of the expansion valve through a capillary tube, and the inert gas and the adsorbent for the gas are filled in the pressure chamber. A temperature-type expansion valve characterized in that a variable heating degree heater is provided for the pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3921587U JPH0356867Y2 (en) | 1987-03-19 | 1987-03-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3921587U JPH0356867Y2 (en) | 1987-03-19 | 1987-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63147669U JPS63147669U (en) | 1988-09-29 |
| JPH0356867Y2 true JPH0356867Y2 (en) | 1991-12-24 |
Family
ID=30852183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3921587U Expired JPH0356867Y2 (en) | 1987-03-19 | 1987-03-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356867Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288424A (en) * | 1997-04-11 | 1998-10-27 | Fuji Koki Corp | Temperature type expansion valve |
-
1987
- 1987-03-19 JP JP3921587U patent/JPH0356867Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63147669U (en) | 1988-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4136528A (en) | Refrigeration system subcooling control | |
| US4475686A (en) | Valve for liquid injection into a refrigerant evaporator | |
| JP3224139B2 (en) | Manufacturing method of temperature expansion valve | |
| JPH01230966A (en) | Control of refrigerating system and thermostatic expansion valve | |
| JPH06307740A (en) | Temperature expansion valve | |
| US6012299A (en) | Process for the control of a refrigeration system, as well as a refrigeration system and expansion valve | |
| US4032070A (en) | Thermostatic expansion valve for refrigeration installations | |
| EP1052464B1 (en) | Thermal expansion valve | |
| US5269459A (en) | Thermally responsive expansion valve | |
| JPH0356867Y2 (en) | ||
| US5966950A (en) | Method of regulating a refrigeration circuit | |
| US5065595A (en) | Thermostatic expansion valve | |
| GB2068522A (en) | Temperature-sensitive control system | |
| JPH0215789B2 (en) | ||
| JP3942848B2 (en) | Expansion valve unit | |
| JPH0338600Y2 (en) | ||
| JP3476619B2 (en) | Expansion valve | |
| US2709897A (en) | Valve responsive to condenser pressure for controlling water supply to condenser in reversible cooling and heating system | |
| JP3213440B2 (en) | Expansion valve | |
| JPH0648214Y2 (en) | Condensation pressure control valve | |
| JPH0240457Y2 (en) | ||
| JPS5821960Y2 (en) | Supercooling control valve | |
| JP2586427B2 (en) | Expansion valve for refrigeration cycle | |
| US4346567A (en) | Heat pump control valve | |
| JP2563180Y2 (en) | Temperature-type evaporation pressure control valve |